C40 Series Twin-Alternating Water Softeners

The A. O. Smith C40 Series delivers continuous, high-capacity water softening for commercial applications where uptime is critical. The alternating twin-tank design ensures uninterrupted operation, while advanced controls and durable construction support reliable performance and long-term serviceability.

C40 Series Twin-Alternating Water Softeners

Product Details
  • High flow capacity supports up to 28 gpm peak demand
  • High capacity per tank delivers up to 210,000 grains for extended uptime
  • Continuous soft water, 24/7 with alternating twin-tank operation
  • Advanced controls provide system visibility
  • Treated water regeneration improves media life and efficiency
  • High-capacity resin delivers consistent commercial-grade softening performance
  • Durable fiberglass-reinforced mineral tanks resist corrosion for long-term reliability
  • Programmable regeneration cycles provide flexible operation
  • NSF-certified components ensure trusted material quality and system integrity

Options

  • Oversized brine tanks
  • Salt grids
Specifications
Continuous Service Flow Rate (GPM) @15 psi pressure loss
up to 25 gpm
Rated Capacity (Grains @ 15 lb. salt)
up to 210,000
Min Pressure (psi)
30 psi
Max Pressure (psi)
100 psi
Min Temperature
40 F
Max Temperature
100 F
Pipe Size
1"-1.5"
Resin Volume (cu.ft.)
up to 7.0 cu.ft.
Certification
NSF Certified Components